The efficient separation of N2O/CO2 using unsaturated Fe2+ sites in MIL-100Fe. Issue 54 (14th June 2021)

• Record Type: Journal Article
• Authors: Wang, Li; Zhang, Feifei; Yang, Jiangfeng; Li, Libo; Li, Jinping
• Is Part Of: Chemical communications. Volume 57:Issue 54(2021)
• Page Start: 6636
• Page End: 6639
• Publication Date: 2021-06-14
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc01659h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : It is a big challenge to separate N2 O from CO2 using adsorption because they have similar physical properties. Abstract : It is a big challenge to separate N2 O from CO2 using adsorption because they have similar physical properties. The Fe 3+ –F − site in MIL-100Fe transforms to an unsaturated Fe 2+ site under high-temperature activation (300 °C), and the target sorbent MIL-100Fe-300 exhibits the biggest difference in CO2 and N2 O adsorption capacity, and the selectivity of N2 O/CO2 (50%/50%) is up to 3.00 at 298 K. According to DFT calculations, the original Fe 3+ –F − site has strong interaction with CO2, but the open Fe 2+ site has a stronger interaction with N2 O. Through a breakthrough experiment, it was confirmed that MIL-100Fe-300 has the best N2 O/CO2 separation performance, making it potentially a useful material in industry.